Reloading 270 win

H

Hello123

New member
This post was accidently put in the rifle section. I look forward to your thoughts.

From what I can gather 4831 and Reloader 22 are good powders. Any opinoin on which is better for the 270?

It is unclear whether the 130, 135, or 140 is generally the more accurate bullet. I am shooting for groups. What would be the best bullet to start reloading with?

Do 270 used brass need to be trimmed?
 
Based on the parent case, you probably couldn't go wrong with IMR 4895, 4064 or 4350 either.
Your rifle will tell you what bullet is the most accurate.
Most folks find Sierra Game King, Nosler Ballistic Tips, Barnes TSX's, And most Hornady bullets to be accurate across the boards.
Good luck.
 
I love 4895 pushing 130 gr ballistic tips. You don't need to go to max loading to get good accuracy(read -less kick).

My remmy 700 likes the 130's, but prefers 150.

I haven't noticed a need to trim the first reload, but I use my lee cutter just to make sure. You will by the 2nd time.

I loaded some mild velocity rounds with 100gr speer sp's, very accurate as well and had the kick of an m-16.

BTW, I really like the 270
 
I never tried reloader 22 but imr 4831 with a 140gr nosler ballistic tip worked very well for me. Matter of fact it worked so well I did not even try anything else with that particular bullet. Load data is listed in the nosler manual and the lighter charges very more accurate for me.
 
RL-22 works very well, velocities a bit above 4831. A very consistent load that is very accurate in most any .270 I've tried is 55 of 4350 under a 130 grain.

Some rifles shoot the 140 or 150 a little better, I can't tell a gnat's eyelash difference between them using the same bullet type (ie Ballistic Tip). I have killed a lot of game with the 130 partition, but there are better bullets out there nowdays.
 
.270 Winchester

I haven't had a .270 Winchester in 30 years, so all my information is openion ONLY.
Check your reloading manuals because what I use to use is TOO HOT for today: both 130 and 150 grain bullets = 57.0 grains of H-4831.
 
A few thoughts, my primers, brass, powder, and bullet starting out are going to be static. My two variables then should be bullet depth and amount of powder. I am going to seat the bullet as shallow as is functional and start out a few grains under the max load. If these variables don't provide good accuracy, what would you change next?
 
Quote: " I am shooting for groups." "Do 270 used brass need to be trimmed?"

Hello123,
If you are shooting for groups, the first thing I would recommend is to buy NEW brass. Suggest buying a couple boxes of new Winchester brass from the same Lot Number. The Lot Number is printed inside one end of box. Trying to load accurate target loads with used brass from who knows what rifles/chambers is likely to be an exercise in frustration. Better to start with new brass and fire it ONLY in your chamber. Minor differences in chamber dimensions can cause variances in case fit within your chamber and thus lead to larger group size. And trimming even new brass cases to the exact same length will eliminate one more possible variance in your ammo.

Good shooting and be safe.
LB
 
Hello123 you might try the "ladder" approach and save some time. This is starting at max load and working down 0.3 per load one round at a time for 20 rounds. Then starting with the lowest chage shoot out at 200 to better yet 300 yards you will get clumps as the "string" goes up. (velocity will make each round climb) As you get to an area that your rifle likes the taste of, vibration and barrel time, the rounds will show a group. That will be a good starting point for powder weight. By doing this you can also watch for signs of "pressure." The next step is like you said seat the bullet back of the lands. If you got a good way to acurately meeasure then you can set up a 20 round test setting of the lands 0.003 at a time and tune in a little more. The concept is to match barrel time and vibration to where the barrel is either pausing on it's "whip" up or down.
 
I'm shooting a 150 gn. nosler balistic tip and 51.5 gns. of H4350 in my .270. I can cover a three shot group(at 100 yards) with a dime. I Trim my brass every time especially with winchester brass. Remington Brass doesn't seem to stretch as much but I dont like them as well.
 
Great day at the range. 100 yards
#1 Nosler 130 gr. B Tips behind 58 g H4831 SC in Win brass and Federal primers with total length of 3.406 inches. 3/4 inch
#2 Factory Rem Core-Lokt 130 g. 0.59 inch without flyer, with flyer 1.5 inch.

Notice the flyer, it was fired out of a seasoned barrel. I cannot explain the flyer.
 

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57 or 58 grains of AA 3100 or IMR 4831 behind 130 Nosler SB or BT. That was within book when I started using it, but may not be now.
 
Went to the range. The patterns were all over the target. Both the scope base and rings were loose. After tightening had only 3 cartridges of each of the following: 59 g and 60 grains of H4831SC in Win brass, Fed. LR primers, and 130 g Nosler B tips. They yielded 0.7 and 0.8 inch groups respectively, in Model 700 with 22 inch sporter barrel. I will load up a few more to confirm which is the best load. Then I will try to mess with bullet depth. Currently they are almost seated to the lands with 3.406 total length. The factory Remington 130 g core-lokt are shooting MOA groups.
 
I live in Australia and we have ADI powders which I understand is repackaged and sold as Hodgdson in the US. AR2213SC (H4831SC) does not shoot at all in my .270 Win, a Winchester pre 64 M70 fwt (22"). But AR2209 (H4350) does and shoots very well. I have had good success with Hornady 130 SPFB [stock # 2730] (my rifle does not like SSTs) and the 140 SPBT [stock # 2735]. See below targets

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130 gr @ 3,095 fps

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140gr @ 3,000 fps

Cheers & God bless,
Magnum
 
My pet load for my 270 is! 57.5gr of AA3100 with a 135gr Sierra match king bullet. This load in my Winchester mod 70 fetherweight will shoot dime size groups at 100 yards. BUT! AA3100 is sensitive to temperature change. The best group shot out of my gun was by a guy from Canada. He shot a five shot group that a dime covered! :eek:
 
Looks like my final load will be 60 grains of H4831 SC (if I had it to do over I would have gone with a ball powder for easier metering), Win brass, Fed LR primers, and Nosler 130 g b-tips. I am seating the bullets to give a total length of 3.34 inches. This is shooting around 0.75 in at 100 yards. I will load of few more groups of this to check for consistency, but I expect this to be my load. I will also chrono this load to tell you what fps it is shooting. I just started trimming all cases.

Who knows, the rifle could perhaps shoot better groups, but this is acceptable :) and who knows what I should vary to make it shoot better? :rolleyes:
 

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"Currently they are almost seated to the lands with 3.406 total length"
"I am seating the bullets to give a total length of 3.34 inches"

You are getting amazing groups for only measuring overall length of the finished cartridge. Measuring this way you will not be able to determine how far the bullet ogive is from the rifling. To do so you need a Stoney Point gauge attached to your vernier caliper. By measuring just overall length, some bullets may be seated to different depths, depending on the brass neck thickness, degree of neck lube or lack thereof, differences in bullet construction even within the same lot number, powder density in the case, cleanliness of the seating die, etc.
 
PS: I'm using H414 rather than H4350 because it is a ball powder and easily metered. 57gr with a CCI large rifle mag primer in a Rem case and a 130gr Hornady SST. Groups under 1/2 inch at 100 yards; 3-shot group of 0.9 inches at 200 yards. But I also have a BOSS on my Win model 70..........
 
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